Electro-magnetic valve-controller



(No Model.)

0. E. LU-NDSTEDT. ELBGTRO MAGNETIC VALVE CONTROLLER.

No. 472,461; I Patented Apr. 5, 1892.

UNITED STAT S PATENT QFFICEO 'OLOF E. LUNDST EDT, OF BROOKLYN, NEW YORK,ASSIGNOR, BY MESNE AS-= SIGNMENTS, TO THE NEW YORK ELECTRICAL DEVICECOMPANY, OF

VIRGINIA.

ELECTRO-MAGN ETIC VALVE-CONTROLLER.

SPECIFICATION forming part of Letters Patent No. 472,461, dated April 5,1892. Application filed August 6, 1890. Renewed October 14,1891. SerialNo. 408,696. (No model.)

To aZZ whom, it may concern.-

Be it known that I, OLOF EMIL LUNDSTEDT, of Brooklyn, in the county ofKings and State of New York, have invented certain new and usefulImprovements in Electro Magnetic Valve-Controlling Apparatus; and I dohereby declare that the following is a full and ex act descriptionthereof, reference being had to the accompanying drawings, and to thelet- IO ters of reference marked thereon, making a part of thisspecification.

This invention relates to an improvement in electrically-actuatedmechanism for operating valves or dampers.

[5 It has for its object to simplify the construction of such anapparatus, render it more compact, and increase its efficiency.

It consists in the combination, with the spindle of a revolving valve ordamper and with the vibrating armature of an electro-magnet,

of a novel system of interposed levers pivoted and arrangedsubstantially as hereinafter described and claimed, whereby themovements of the armature are made to actuate 2 5 the valve to open andto close it.

In the accompanying drawings, Figure 1 is a side elevation of myimproved electro-magnetic valve-controlling apparatus; Fig. 2, ahorizontal section in line so a: of Fig. 1, afford- 0 ing a top or planView of the same; and Fig. 3 illustrates a modification in theinvention.

A represents the valve or damper to be actuated. The form of the valveis immaterial. It is mounted, however, in the flue or 3 5 passage whichit is designed to close upon a spindle B, to which it is secured in anysuitable manner so as to move with it.

C is an electro-magnet in electrical connection by means of wires D Dwith a battery E.

The electrical circuit may be opened and closed for the purpose ofoperating the valve by means of a switch F, and also by means of athermostatic or other circuit-closing device G of any approveddescription. The arma- 45. ture W of the magnet C is attached to twoshort arms H H, pivoted at one side of the magnet to the plate or frameJ which supports it. From the pivotal axis of said arms H H, whichextends parallel with the spindle B of the valve, a longer arm Hprojects at about a right angle with said shorter arms, forming withthem in eifect a bell-crank 1ever. The longer arm H is coupled by a linkK (see Fig. 2) with a vibrating lever L, swinging upon a pivot-pin M,likewise mounted parallel with the valve-spindle B. The outer free endof this lever L is in turn coupled, preferably by a link N,with theouter end of a short arm P, secured upon the outer end of thevalve-spindle to project radially therefrom. The difference in lengthbetween the short arm H of the bell-crank lever, to which the armatureof the magnet is attached, and its long arm H, which is coupled to thevibrating lever L, in connection with the attachment of the link K tothe lever L at a point much nearer to the pivot of the lever than to itsouter free end, causes the movement of the armature W in eitherdirection to be so far amplified in its transmission to the arm P of thevalve-spindle B as to suffice to impart a quarter-turn to the spindleand thereby carry the valve from an open to a closed position, or viceversa. The valve A is normally closed, and the armature WV of the magnetC is retracted by the action of a spring R, which may beattached to thevalvespindle, as shown in Fig. l, or be applied at some other suitablepoint in the described mechanism by which the valve-spindle and thearmature are coupled.

In the operation of the device, the armature WVof the magnetbeingautomatically retracted bythe action of the springR in manner asdescribed, the valve or damper A may be ad justed and secured upon thespindle B, which is mediately coupled to said armature, either so thatthe valve shall normally close the pipe or opening in which itis placed,as illustrated in Fig. l, or oppositely, if required, so that it shallnormally stand open. With the valve normally closed, as shown in Fig. 1,if the electrical circuit in which the magnet C is included be closed,either by the action of the thermostatic device G or by means of theswitch F, the armature will be attracted by the magnet andin movingtoward it will swing the bell-crank lever H H upon its pivot, so as tocause its longer arm H to produce a movement of the lever L, which inturn will :00

draw upon the arm P of the valve-spindle B, and thereby cause it torotate one-quarter of a turn and so swing the valve A open at a rightangle to its position when closed. This movement of the valve will causea stress upon the spring R, so that the spring so soon as the armature Wis liberated by the opening of the electrical circuit will operateautomatically to retract the armature and return the valve A to itsfirst or closed position.

Amodifioation in the arrangement of the magnet-valve and interveninglevers is shown in Fig. 3, illustrating the adaptability of theinvention to various positions of the valve.

I claim as my invention The combination, with the spindle of a rotatingvalve and an arm extending radially therefrom, of a pivoted bent leverhaving arms of unequal lengths, an armature upon the shorter end of saidlever, an electro-magnet attracting said armature, a springrctractingit, a single lever pivoted at one end at a point beyond the long arm ofthe bent lever to extend thence toward the pivotal axis thereof, a linkcoupling the long arm of the bent lever with said single lever near toits pivotal axis, and a link connecting the outer end of said singlelever with the radial arm of the valve-spindle, all substantially in themanner and for the purpose herein set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

O. E. LUNDSTED'I.

Vitnesses:

VICTOR STEINBERGER, A. N. JESBERA.

